HeliCoil Manual Installation Tools Helicoil Inserting Tool is ideal for installing inserts in small production runs or in areas where compressed air or electricity are not available and offers a quicker alternative to the simple hand installation tool. The Installation Tool For Thread Insert is suitable for use when installing free running and Keylocking Insert. Tool mandrel is wound into the insert which is then installed into the tapped hole. During installation the insert diameter is reduced when passing through the bottom of the prewinder tool chamber making it easier to install. The mandrel is removed by turning the crank in a counter clockwise direction, leaving the insert in place. Size & Type: M2-M30 for metric and from UNC2-56 to 1” Other sizes on request We have Prewinder tools, simple manual tools, hex electric tools and other type of tools.